172-65605M-14 (SQ2/SQ4/SQ6) 10 Dec 2019
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2. Operation
(1) Operation of the steam inlet valve
Open the steam inlet valve (No. 9) as slowly as
possible.
Make sure that condensate is discharged from
the condensate outlet of the steam control valve
with the condensate separator (No. 10) and the
value indicated on the pressure gauge (No. 19)
is stable at the predetermined value
(recommended value: 0.3 to 0.6 MPaG.)
(2) Stand-by operation (STARTING UP…)
a) Touch START button on the display.
b) Even if the START button is touched, steam
will not flow unless water is flowing.
If water is already flowing at a temperature
above the set temperature, (4) is the next
step.
(3) Operation of the water supply valve
Open the valve (not included with the unit) on the water supply system.
(4) Starting unit operation
When the water reaches or exceeds the set
flow rate
1)
, the flow sensor (No. 7) senses
the water flow in the unit to start the
operation after the standby time of 5
seconds
2) 3)
.
The solenoid valve (No. 11) opens and the
steam control valve with condensate
separator (No. 10) adjusts the steam flow
rate.
The time required for the water to reach the set temperature is
approximately 1 to 4 minutes, depending on the operating conditions.
1)
The set flow rate of water is the minimum controllable flow rate for the unit under
operating conditions. (Factory setting: see 'product specification document'.) The
set flow rate can be verified in the flow sensor set value on the parameter settings
screen (2) in the touch panel.
2)
Alarm delay time is the time required to reach stable flow after water begins to
flow, or the time required for the cooling circulation unit to operate to prevent
overheating when the water flow stops. (Factory setting: 5 seconds).
3)
If the flow does not stabilize within 5 seconds and the unit repeatedly starts and
stops operation, the alarm delay time must be changed. (Contact TLV for details
of how to change the alarm delay time).
(5) Water temperature
The difference between the target temperature and the water temperature
is normally
±
1
°
C, depending on the operating conditions.
When the temperature difference is 3
°
C or more, or when the water
temperature fluctuates, it is likely that the water flow rate is also fluctuating
greatly or is below/around the controllable flow rate. In such cases, contact
the facility manager.
Details of how to check the water flow rate can be found in the
"Commissioning Procedure" section of the "Installation/Commissioning"
chapter.
Steam Inlet Valve (9)
Pressure Gauge (19)
Water flow display
